All evil is good become cancerous.

Although we will hate and fight the machines, we will be supplanted anyway, and rightly so, for the intelligent machines to which we will give birth may, better than we, carry on the striving toward the goal of understanding and using the Universe, climbing to heights we ourselves could never aspire to.

In life, unlike chess, the game continues after checkmate.

Science fiction writers foresee the inevitable, and although problems and catastrophes may be inevitable, solutions are not.

Naturally, there's got to be a limit for I don't expect to live forever, but I do intend to hang on as long as possible.

In a properly automated and educated world, then, machines may prove to be the true humanizing influence. It may be that machines will do the work that makes life possible and that human beings will do all the other things that make life pleasant and worthwhile

There is not a discovery in science, however revolutionary, however sparkling with insight, that does not arise out of what went before.